layouts: allow lists to be overwritten

- Replace fixed spacing by the pico variable, and improve the horizontal
  spacing of lists of posts (sections).
- Place the list of last posts of the home page on a separate partial.
  Thus, this partial is easier to overwrite in the user layout
  directory.

Co-Authored-by: iGor milhit <igor@milhit.ch>

assets/scss/_lists.scss

@@ -8,11 +8,13 @@
 .posts-list {
   display: flex;
   flex-direction: column;
-  margin-bottom: .5em;
+  margin-bottom: var(--pico-spacing);
 
   > article {
-    padding-bottom: .5rem;
+    padding-bottom: var(--pico-spacing);
+    padding-left: var(--pico-spacing);
   }
+
 }
 
 /* List of last posts, on the home page*/

layouts/_default/home.html

@@ -1,20 +1,7 @@
 {{ define "main" }}
   <!-- List the 5 last posts if the home_post_list parameters is set to true -->
   {{ if .Site.Params.home_post_list }}
-    <section class="home-posts-list">
-    <h2>{{ i18n "lastPosts" }}</h2>
-      <!--
-        Ranges regular pages by the publish date, in reverse order, to display the
-        post titles of the section from most recent to older, and the category.
-      -->
-      {{ range first 5 .Site.RegularPages.ByPublishDate.Reverse }}
-        <article>
-          <a href="{{ .Permalink }}">
-            {{- .Title -}}
-          </a>
-        </article>
-      {{ end }}
-    </section>
+    {{ partial "home_post_list" . }}
   {{ end }}
   <section class="home-content">
     <!-- Content for home.html, as a sort of list page,

layouts/_default/section.html

@@ -12,11 +12,11 @@
         <!--
             Ranges pages by the publish date, in reverse order, to display the
             post titles of the section from most recent to older. It adds to
-            the title the date and categories (from lists-footer.html)
+            the title the date and categories (from lists-footer.html).
         -->
         {{ range .Pages.ByPublishDate.Reverse }}
             <article>
-                <a href="{{ .Permalink }}">
+              <a href="{{ .Permalink }}">
                     {{.Title}}
                 </a>
                 {{ partial "lists-footer.html" . }}

layouts/partials/home_post_list.html

@@ -0,0 +1,14 @@
+<section class="home-posts-list">
+  <h2>{{ i18n "lastPosts" }}</h2>
+    <!--
+      Ranges regular pages by the publish date, in reverse order, to display the
+      post titles of the section from most recent to older, and the category.
+    -->
+    {{ range first 5 .Site.RegularPages.ByPublishDate.Reverse }}
+      <article>
+        <a href="{{ .Permalink }}">
+          {{- .Title -}}
+        </a>
+      </article>
+    {{ end }}
+</section>